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Competing Magnetic Phases on a "Kagome Staircase"

G. Lawes·M. Kenzelmann·N. Rogado·K. H. Kim·G. A. Jorge·R. J. Cava·A. Aharony·O. Entin-Wohlman·A. B. Harris·T. Yildirim·Q. Z. Huang·S. Park·C. Broholm·A. P. Ramirez
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Abstract

We present thermodynamic and neutron data on Ni_3V_2O_8, a spin-1 system on a kagome staircase. The extreme degeneracy of the kagome antiferromagnet is lifted to produce two incommensurate phases at finite T - one amplitude modulated, the other helical - plus a commensurate canted antiferromagnet for T ->0. The H-T phase diagram is described by a model of competing first and second neighbor interactions with smaller anisotropic terms. Ni_3V_2O_8 thus provides an elegant example of order from sub leading interactions in a highly frustrated system

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G. Lawes, M. Kenzelmann, N. Rogado, K. H. Kim, G. A. Jorge, R. J. Cava, A. Aharony, O. Entin-Wohlman, A. B. Harris, T. Yildirim, Q. Z. Huang, S. Park, C. Broholm, A. P. Ramirez. 2004-07-01. Competing Magnetic Phases on a "Kagome Staircase". https://doi.org/10.1103/physrevlett.93.247201

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